Diversity of tin(IV), zinc(II), and cadmium(II) complexes supported by N,N'-bis(3,5-di-tert-butyl-2-hydroxyphenyl)-4,5-dichloro-1,2-phenylenediamine

Meshcheryakova, I.N.; Yakushev, I.A.; Rumyantcev, R.V.; Arsenyev, M.V.; Aysin, R.R.; Baryshnikova, S.V.; Maksimova, A.D.; Klimashevskaya, A.V.; Kazakov, G.G.; Piskunov, A.V.

Авторы: Meshcheryakova Irina N., Yakushev Ilya A., Rumyantcev Roman V., Arsenyev Maxim V., Aysin Rinat R., Baryshnikova Svetlana V., Maksimova Anna D., Klimashevskaya Anastasiya V., Kazakov Gennady G., Piskunov Alexandr V.
Журнал: Journal of Molecular Structure
Том: 1363
Год издания: 2026
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Номер статьи: 145765
DOI: 10.1016/j.molstruc.2026.145765
Аннотация: A new redox-active tetradentate ONNO-type ligand containing electron-withdrawing chlorine substituents in the phenylene ring, namely N,N'-bis(3,5-di‑tert‑butyl‑2-hydroxyphenyl)-4,5-dichloro-1,2-phenylenediamine (LH4), has been synthesized. Its coordination behavior was studied with tin(IV), zinc(II), and cadmium(II) ions. The reaction with Sn(IV) precursor yields the complex LSnMe2 (1), where the ligand is fully deprotonated and coordinated in its dianionic form. However, in solution, L undergoes intramolecular cyclization within the metal coordination sphere, resulting in the formation of a phenoxazine moiety and, consequently, a new ligand L' in the isolated complex L'SnMe2 (2). For Zn(II) and Cd(II), the structures of the resulting compounds — (LH)2Zn (3), (LH)2Cd (4), L'2Zn (5), and L'2Cd (6) — are determined by the choice of oxidant (p-benzoquinone or atmospheric oxygen) used during the synthesis. The structures of the synthesized complexes were established using a combination of NMR, IR, and UV spectroscopy, along with elemental analysis. SC-XRD was carried out for the tin(IV) and zinc(II) compounds. It was shown that the obtained derivatives possess redox-amphoteric properties and exhibit intense absorption in the near-IR region.
Добавил в систему: Айсин Ринат Равильевич

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Diversity of tin(IV), zinc(II), and cadmium(II) complexes supported by N,N'-bis(3,5-di-tert-butyl-2-hydroxyphenyl)-4,5-dichloro-1,2-phenylenediamineстатья

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